| Plant | Fuel | Country | MW | t CO₂/yr |
|---|---|---|---|---|
| ASCO GR | Nuclear | Spain | 1,990 | — |
| BESOS GRUPO 5 | Gas | Spain | 1,671 | — |
| LITORAL DE ALMERIA GR 2 | Coal | Spain | 1,120 | — |
| TERUEL GR 3 | Coal | Spain | 1,056 | — |
| VANDELLOS GR 2 | Nuclear | Spain | 1,045 | — |
| COMPOSTILLA II GR 5 | Coal | Spain | 1,005 | — |
| CTCC AS PONTES GRUPO 5 | Gas | Spain | 856 | — |
| SAN ROQUE GRUPO 2 | Gas | Spain | 792 | — |
| CAS TRESORER TG3 CC2 | Gas | Spain | 429 | — |
| CRISTOBAL COLON | Gas | Spain | 391 | — |
| TAJO DE LA ENCANTADA 1 | Hydro | Spain | 377 | — |
| MEQUINENZA 1 | Hydro | Spain | 322 | — |
| RIBA ROJA 1 | Hydro | Spain | 261 | — |
| MORALETS 1 | Hydro | Spain | 219 | — |
| GUILLENA 1 | Hydro | Spain | 208 | — |
| TAVASCAN INFERIOR | Hydro | Spain | 151 | — |
| CORNATEL GR 1 | Hydro | Spain | 131 | — |
| CANELLES 1 | Hydro | Spain | 107 | — |
| MONTAMARA 1 | Hydro | Spain | 92 | — |
| SUSQUEDA 3 | Hydro | Spain | 89 | — |
| LAS ONDINAS GR 1 | Hydro | Spain | 82 | — |
| IZNAJAR 1 | Hydro | Spain | 77 | — |
| ARTIES 1 | Hydro | Spain | 68 | — |
| SAN AGUSTIN GR 1 | Hydro | Spain | 63 | — |
| BARCENA GR 1 | Hydro | Spain | 61 | — |
| CAMARASA II 1 | Hydro | Spain | 59 | — |
| SAU 2 | Hydro | Spain | 56 | — |
| PUERTO PENA 1 | Hydro | Spain | 55 | — |
| EUME GR 1 | Hydro | Spain | 54 | — |
| FLIX 1 | Hydro | Spain | 52 | — |
| LLAVORSI CARDOS 1 | Hydro | Spain | 52 | — |
| CIJARA M. IZDA. 3 | Hydro | Spain | 52 | — |
| CIJARA M. DCHA. 1 | Hydro | Spain | 50 | — |
| CEUTA GRUPO 13 | Oil | Spain | 49 | — |
| MELILLA 13 | Oil | Spain | 47 | — |
| PONT DE REI 1 | Hydro | Spain | 46 | — |
| SEROS II 1 | Hydro | Spain | 44 | — |
| LAFORTUNADA CINQUETA 1 | Hydro | Spain | 41 | — |
| OLIANA 3 | Hydro | Spain | 38 | — |
| QUERENO GR 1 | Hydro | Spain | 36 | — |
| ESCALES 1 | Hydro | Spain | 36 | — |
| SANTA MARINA GR 3 | Hydro | Spain | 35 | — |
| RIBADELAGO GR 3 | Hydro | Spain | 35 | — |
| CALDES 2 | Hydro | Spain | 32 | — |
| TERRADETS 1 | Hydro | Spain | 32 | — |
| LA SERENA | Hydro | Spain | 22 | — |
| VIELHA 1 | Hydro | Spain | 22 | — |
| PORTO GR 1 | Hydro | Spain | 18 | — |
| BARRADOS | Hydro | Spain | 16 | — |
| GUADALMENA | Hydro | Spain | 15 | — |
| BEMBEZAR | Hydro | Spain | 15 | — |
| TORAN | Hydro | Spain | 13 | — |
| PAMPANEIRA | Hydro | Spain | 13 | — |
| DUQUE | Hydro | Spain | 13 | — |
| LERIDA | Hydro | Spain | 12 | — |
| TERMENS | Hydro | Spain | 12 | — |
| CEUTA 9 G-9 | Oil | Spain | 12 | — |
Ownership & capacity: WRI Global Power Plant Database (CC BY 4.0). Measured CO₂ where reported to EPA/EU ETS/Climate TRACE.
